Chapter 3

Older lithosphere is destroyed in association with:

deep-sea trenches

New lithosphere is produced in association with:

oceanic ridges

Along the margins of the Pacific are found most of Earth's:

oceanic trenches.

With respect to mid-ocean ridges, transform faults are:

perpendicular to the ridge axis.

Volcanic peaks on the deep-ocean floor with conical tops are called:

seamounts

Passive continental margins are characterized by all of the following except:

shallow coastal waters. *deep-sea trenches. thick sediment accumulation. very little volcanic and earthquake activity. broad continental shelves.

The correct order of seafloor features from the coast to the mid-ocean ridge is:

shelf, slope, rise, abyssal plain.

Warm-water (From 30°C to 350°C) hydrothermal vents form:

white smokers

Submarine canyons were most likely formed by:

erosion by turbidity currents

Characteristics of active continental margins include all of the following except:

*broad continental shelves. deep-sea trenches. volcanic and earthquake activity. thin sediment accumulation. chains of islands.